Assighob to davis-bottrhoit



W. C. BUCKNAM.

GAS CUTTING MACHINE.

APPLXCATION FILED FEB. 19. 19:9.

1 ,3245007. Patented Dec. 2, 1919.

SHEETS-SHEET 1.

mvron e. W

A TTORNEY w. c. BUCKNAMf GAS CUTTING MACHINE.

APPLICATION FILED FEB. 19, 1919.

1,324,007. Y Patented Dec. 2,1919.

2 SHEETSSHEET 2- IN l/E/V TOR Wndfgyz iinirran s'ra'rns rare I canton.

WORTHY Q. BUCKNAM, JERSEY CITY, NEW JERSEY, ASSIGNOR TO DAVIS-BOURNON- VILLE COMPANY, OF NEW YORK, N.

Y., A CORPORATION OF NEW YORK.

GAS CUTTING-MACHINE.

Specification of nsaawz.

Application filed February 19, 1919. Serial No. 278,040.

To all whom it may concern: y Be it known that I, WORTHY C. Buck'- NAM, a citizen of the United States,- and resident of Jersey City, in the county of Hudson and State of New Jersey,'have in vented a new and useful Gas" Cutting-Machine, of which the following isa specification.

The object of this invention is to provide a simple small, compact, and readily portable mac ine for cutting various shapes and openings in metal or for cuttingany desired or irregular course by means ofgases. The invention is specifically an improve ment upon and within the apparatus disclosed in my prior Patents 1,059,271 and 1,059,329, of April 15, 1913. The preferred embodiment of the present improvement comprises a standard bearing an arm or frame jointed for universal horizontal movement, a torch and a rotary driven magnetic tracer carried by the arm in vertical axial ceeds.

'alinement, and a templet over the arm for cooperation with thetracer. Various other aspects and features of the invention will...- become apparent as the .specification pro- In the drawings: Figure 1 is a side elevation, Fig. 2 is a plan; and

Fig. 3 is a detall vertical section at the region of the magnetic-tracer.

The machine has a base 1 with a pedestal or standard 2 bearing a continuation post 3. An arm section 4 of a jointed arm or frame is pivotally mounted on the post 3 by means ofa bracket piece 5. Another arm section 6 is knuckleq'ointdd at 7 to a bracket piece 6 on the end of the'section 4, the two arm sections being adapted to assume various angular relations in the operation of the machine. The free end of-the: arm section 6 carries a yoke, consistingof upper and lower castings 8 and 9. I The lower yoke portion 9 has a vertical" tubular terminal .10, constituting a holder for a cutting torch 11. of standard construction. The torch can be raised and lowered in this holder by a hand-wheel 12 operating a rack and pinion in the customlugs 18 on the yoke member 8. On the upper end of said shaft is a worm 19 engaging a worm wheel 20 on a horizontal shaft 21 journaled in a suitable bearing on the same part.

A bevel gear 22 on the opposite end of the shaft 21 meshes with a bevel gear 23 on a vertical sleeve 24, which turns about'a fixed vertical shaft 25. The, said fixed shaft .24 passes through lugs 26 and 27 of the yoke member, to the lower of which it is pinned, as indicated at 28. The sleeve 24.is

suitablyjourn'aled in the lug 26' and about the shaft25 and is pinned or otherwise connected to acylindrical magnet core member 29. The fixed shaft 25' extends upward through said core member and is provided at its upper end with a reduced threaded extremity 30, which screws into an opening in the top of a tubularmagnet body 31, the

magnet body and the energizing coil 32 thereon being thussupported from the universally movable arm or frame and being stationary with'respect to the core member 29, which is. rotatable by the motor and gearing.

The which projects below the magnet body is formed as a knurled roller 34 to travel upon the vertical boundary or edge 35 of atemlar instance the guiding surface or edge is an internal boundary formed by anopening in the templet plate.

From the foregoing it will be perceived that the feed roller or tracer 34 will adhere T 15 speed may be varied through a known adjustable governor contained in an extension case 37 on the motor, or otherwise".

lower end of the core member 29 plet 36 The templetis clamped at the top of the standard post 3, and in this particuappropriate uniform" speed for cutting.

The tracer roller and the jet' delivering means of the torch being in vertical axial alinement, the torch operates simultaneously .through the same path as the roller. In the illustrated embodiment the result is to out a desired opening in a plate a, which is a duplicate of the templet opening.

' In order to enable the cut to be started ofi the desired course, and in this instance in the cut-out disk, which is scrap, a switch:

piece 38 ispivoted at 39 on the templet, so as to be capable of projecting into the templet opening In this position, it is sustained by a stop pin 40 on the templet. The tracer or feed roller in starting is placed against the forward inclined edge il of the ner. When the roller comes" aroitnd to the.

back of the switch-piece, itpushesit out of the way, to the dotted l ne position of Fig. 2. In order to prevent the magnetic roller adhering to the switchpiece at this time, a

strip 42 of brass or other non-magnetic material is-secured along the back of the The electric circuits are not shown, as being obvious matters. The wires of the magnet circuit are connected to binding-posts 43 on the magnet, and the circuit .is controlled by a switch at onthebase. Another switch 45 controls the motor circuit, 'This circuit may also be controlled by a switch 46 on the torch, connected with the valve controlling the cutting oxygen, the handle of which is seen at 47, as disclosed and claimed in my Patent 1,118,183, of November 24', 1914:.

Uther embodiments of the invention may be designed. It will beaxnderstood that the templet shown in the drawings is removable and can be replaced with other forms of templet appropriate for other specific forms of cut. 1

What I claim as new is:

1. A gas-cutting machine comprising a support, a frame supported therefrom jointed for universal movement in a plane, a downwardly-directed torch carried by the frame, and a driven tracer connected with the frame and located over thetorch.

2. A gas-cutting machine comprising, in

-. combination, a'support, a frame supported therefrom jointed for universal movementin a plane, a downwardly-directed torch carried by the frame, a templet over the torch, and mechanical feed means carried by the frame to cooperate with said templet.

3. A gas cutting machine comprising, in

combination, a standard, a frame supported therefrom jointed for universal movement in a plane, a downwardlydirected torch carneeaoov I riedby the frame, atempl'et supportedqfrom 1 the standard abovethe frame, and means for p polling the torch in a predetermined path aving a wheel on the'frame in axial alineinent with the torch coeperative with the templet.

. a. A gas-cutting machine comprising, in

combination, a support, aframe supported therefrom jointed for universal movement in'a plane, a torch carried by the frame, a

stationary templet, and means for propelling the torch having a wheel on the. frame in axial alinement with the'torch cocperative with the templet. I

5. A gas-cutting machine comprising, in combination, a support, a frame supported therefrom jointed for universal movement in a plane, a torch carried by the frame, a stationary templet, a magnetic rolling tracer carried by the frame in axial alinement' with the torch to cocperate with the templet, and means for driving the tracer.v

"6. A gas-cutting machine comprising, in combination, a support, a pivotally'jointed arm pivotally supported on the support, a torch carried by thearm, a stationary temple't, and a driven tracer wheel on the arm in axial alinement with the torch.

7. A gas-cutting machine comprising, in

combination, a support, a jointed arm on the support, a yoke on the arm, a torch mounted in one part of the yoke, a rolling tracer mounted in the other part .of the yoke in axial alinement with the torch, a .templet, and means for driving the tracer.

8. A gas-cutting machine comprising, in combination, a carrier universally movable in a plane, a torch and a driven magnetic tracer in axial alinement in the carrier, a

'templet, and a movable switch-piece associated with the templet whereby the cutis started ofi' the true course.

9QA gas-cutting machine comprising, in

combination, a carrier universally movable in a plane, a torch and a'drlven magnetic tracer in axial alinement in the carrier, a

templet, a pivoted switch-piece associated with the templet whereby the cut is started oh the true course, and an abutment for sustaining the switch-piece in the starting position, the switch-piece being adapted to be moved automatically out of the way by the tracer toward the conclusion of the cut.

10. In a gas-cutting apparatus, the 'combination with a torch carrier, of a driven magnetic feed or tracer wheel journal'ed on independently supported on the carrier;

won'rnv' c. BUOKNAM.

the carrier, and a non-rotary mag'netbody? DISCLAIMER 1,324,007.Worthy O. Bucknam, Jersey City, N. J. GAS-CUTTING MACHINE. Patent dated December 2, 1919. Disclaimer filed February 18, 1933, by the assignee, Air Reduction Company, Incorporated.

Hereby enters this disclaimer to that part of the claim in said specification which is in the following words, to wit:

1. A gas-cutting machine comprising a support, a frame supported therefrom jointed for universal movement in a plane, a downwardly-directed torch carried by the frame, and a driven tracer connected with the frame and located over the torch.

2. A gas-cutting machine comprising, 1 combination, a support, a frame supported therefrom jointed for universal movement in a plane, a downwardly-directed torch carried by the frame, a templet over the torch, and mechanical feed means carried by the frame to cooperate w1th said templet.

[Ofiicial Gazette March 14, 1.933.] 

